The Effects of Tooling Imperfections on the Initiation of Wrinkling in Finite Element Modeling of a Deep Drawing Process

[+] Author and Article Information
J. Hematian, P. M. Wild

Department of Mechanical Engineering, Queen’s University, Kingston, Ontario

J. Eng. Mater. Technol 123(4), 442-446 (Jul 24, 2000) (5 pages) doi:10.1115/1.1396351 History: Received July 24, 2000
Copyright © 2001 by ASME
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(a) Single-step deep drawing with a blank holder; (b) first “dishing” step in multi-step deep drawing; (c) subsequent forming steps with radiused dies
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Wrinkling pattern of 1/4 inch plates formed by using a conical die and a semi ellipsoidal punch (Hematian and Wild 8)
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(a) Finite element mesh #1; (b) finite element mesh #2
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Displacement and rotation axes
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Wrinkling patterns for the perfect model
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Wrinkling patterns for the displaced-punch model
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Wrinkling patterns for the tilted-blank model
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The effect of angle of blank tilt on the initiation and growth of wrinkles
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Wrinkling patterns with X-displaced-punch and tilted-blank
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Wrinkling patterns with Y-displaced-punch and tilted-blank
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Wrinkling height at various punch stroke for tool setting imperfection models



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